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<pre><a name="line-1"></a>
<a name="line-2"></a><span class='hs-comment'>{-# LINE 2 "./Graphics/UI/Gtk/Gdk/Pixmap.chs" #-}</span>
<a name="line-3"></a><span class='hs-comment'>-- -*-haskell-*-</span>
<a name="line-4"></a><span class='hs-comment'>-- GIMP Toolkit (GTK) Pixmap</span>
<a name="line-5"></a><span class='hs-comment'>--</span>
<a name="line-6"></a><span class='hs-comment'>-- Author : Armin Groesslinger</span>
<a name="line-7"></a><span class='hs-comment'>--</span>
<a name="line-8"></a><span class='hs-comment'>-- Created: 05 July 2005</span>
<a name="line-9"></a><span class='hs-comment'>--</span>
<a name="line-10"></a><span class='hs-comment'>-- Copyright (C) 2005 Armin Groesslinger</span>
<a name="line-11"></a><span class='hs-comment'>--</span>
<a name="line-12"></a><span class='hs-comment'>-- This library is free software; you can redistribute it and/or</span>
<a name="line-13"></a><span class='hs-comment'>-- modify it under the terms of the GNU Lesser General Public</span>
<a name="line-14"></a><span class='hs-comment'>-- License as published by the Free Software Foundation; either</span>
<a name="line-15"></a><span class='hs-comment'>-- version 2.1 of the License, or (at your option) any later version.</span>
<a name="line-16"></a><span class='hs-comment'>--</span>
<a name="line-17"></a><span class='hs-comment'>-- This library is distributed in the hope that it will be useful,</span>
<a name="line-18"></a><span class='hs-comment'>-- but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="line-19"></a><span class='hs-comment'>-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span>
<a name="line-20"></a><span class='hs-comment'>-- Lesser General Public License for more details.</span>
<a name="line-21"></a><span class='hs-comment'>--</span>
<a name="line-22"></a><span class='hs-comment'>-- TODO</span>
<a name="line-23"></a><span class='hs-comment'>--</span>
<a name="line-24"></a><span class='hs-comment'>-- add methods</span>
<a name="line-25"></a><span class='hs-comment'>--</span>
<a name="line-26"></a><span class='hs-comment'>-- |</span>
<a name="line-27"></a><span class='hs-comment'>-- Maintainer : gtk2hs-users@lists.sourceforge.net</span>
<a name="line-28"></a><span class='hs-comment'>-- Stability : provisional</span>
<a name="line-29"></a><span class='hs-comment'>-- Portability : portable (depends on GHC)</span>
<a name="line-30"></a><span class='hs-comment'>--</span>
<a name="line-31"></a><span class='hs-comment'>-- Pixmaps -- Offscreen drawables</span>
<a name="line-32"></a><span class='hs-comment'>--</span>
<a name="line-33"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>UI</span><span class='hs-varop'>.</span><span class='hs-conid'>Gtk</span><span class='hs-varop'>.</span><span class='hs-conid'>Gdk</span><span class='hs-varop'>.</span><span class='hs-conid'>Pixmap</span> <span class='hs-layout'>(</span>
<a name="line-34"></a><span class='hs-comment'>-- * Detail</span>
<a name="line-35"></a><span class='hs-comment'>-- Pixmaps are offscreen drawables. They can be drawn upon with the</span>
<a name="line-36"></a><span class='hs-comment'>-- standard drawing primitives, then copied to another drawable</span>
<a name="line-37"></a><span class='hs-comment'>-- with 'drawDrawable'.</span>
<a name="line-38"></a>
<a name="line-39"></a><span class='hs-comment'>-- * Class Hierarchy</span>
<a name="line-40"></a><span class='hs-comment'>-- |</span>
<a name="line-41"></a><span class='hs-comment'>-- @</span>
<a name="line-42"></a><span class='hs-comment'>-- | 'GObject'</span>
<a name="line-43"></a><span class='hs-comment'>-- | +----'Drawable'</span>
<a name="line-44"></a><span class='hs-comment'>-- | +----Pixmap</span>
<a name="line-45"></a><span class='hs-comment'>-- @</span>
<a name="line-46"></a>
<a name="line-47"></a><span class='hs-comment'>-- * Types</span>
<a name="line-48"></a> <span class='hs-conid'>Pixmap</span><span class='hs-layout'>,</span> <span class='hs-conid'>PixmapClass</span><span class='hs-layout'>,</span>
<a name="line-49"></a> <span class='hs-conid'>Bitmap</span><span class='hs-layout'>,</span>
<a name="line-50"></a>
<a name="line-51"></a><span class='hs-comment'>-- * Constructors</span>
<a name="line-52"></a> <span class='hs-varid'>pixmapNew</span>
<a name="line-53"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-54"></a>
<a name="line-55"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Maybe</span>
<a name="line-56"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>Glib</span><span class='hs-varop'>.</span><span class='hs-conid'>FFI</span>
<a name="line-57"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>Glib</span><span class='hs-varop'>.</span><span class='hs-conid'>GObject</span> <span class='hs-layout'>(</span><span class='hs-varid'>constructNewGObject</span><span class='hs-layout'>)</span>
<a name="line-58"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>UI</span><span class='hs-varop'>.</span><span class='hs-conid'>Gtk</span><span class='hs-varop'>.</span><span class='hs-conid'>Types</span>
<a name="line-59"></a><span class='hs-comment'>{-# LINE 58 "./Graphics/UI/Gtk/Gdk/Pixmap.chs" #-}</span>
<a name="line-60"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Graphics</span><span class='hs-varop'>.</span><span class='hs-conid'>UI</span><span class='hs-varop'>.</span><span class='hs-conid'>Gtk</span><span class='hs-varop'>.</span><span class='hs-conid'>Gdk</span><span class='hs-varop'>.</span><span class='hs-conid'>Drawable</span> <span class='hs-layout'>(</span><span class='hs-conid'>Drawable</span><span class='hs-layout'>,</span> <span class='hs-conid'>DrawableClass</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-61"></a>
<a name="line-62"></a>
<a name="line-63"></a><span class='hs-comment'>{-# LINE 61 "./Graphics/UI/Gtk/Gdk/Pixmap.chs" #-}</span>
<a name="line-64"></a>
<a name="line-65"></a><a name="Bitmap"></a><span class='hs-comment'>-- | A 'Bitmap' is a special 'Pixmap' in that the number of bits per pixel</span>
<a name="line-66"></a><a name="Bitmap"></a><span class='hs-comment'>-- is one, that is, a pixel is either set or unset. Whenever a function</span>
<a name="line-67"></a><a name="Bitmap"></a><span class='hs-comment'>-- expects a 'Bitmap', a 'Pixmap' of depth one must be supplied.</span>
<a name="line-68"></a><a name="Bitmap"></a><span class='hs-keyword'>type</span> <span class='hs-conid'>Bitmap</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Pixmap</span>
<a name="line-69"></a>
<a name="line-70"></a><span class='hs-comment'>-- | Create a new pixmap.</span>
<a name="line-71"></a><span class='hs-comment'>--</span>
<a name="line-72"></a><span class='hs-comment'>-- If @drawable@ is @Nothing@, the depth of the pixmap is taken from the</span>
<a name="line-73"></a><span class='hs-comment'>-- @depth@ parameter, otherwise the pixmap has the same depth as the</span>
<a name="line-74"></a><span class='hs-comment'>-- 'Drawable' specified by @drawable@. Therefore, at least one of @drawable@</span>
<a name="line-75"></a><span class='hs-comment'>-- and @depth@ must not be @Nothing@.</span>
<a name="line-76"></a><span class='hs-comment'>--</span>
<a name="line-77"></a><span class='hs-comment'>-- * Note that in Gtk+ 2.0 the @drawable@ can only be a 'DrawWindow', not an</span>
<a name="line-78"></a><span class='hs-comment'>-- arbitary 'Drawable'.</span>
<a name="line-79"></a><span class='hs-comment'>--</span>
<a name="line-80"></a>
<a name="line-81"></a><a name="pixmapNew"></a><span class='hs-definition'>pixmapNew</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>DrawableClass</span> <span class='hs-varid'>drawable</span>
<a name="line-82"></a> <span class='hs-keyglyph'>=></span> <span class='hs-conid'>Maybe</span> <span class='hs-varid'>drawable</span> <span class='hs-comment'>-- ^ @drawable@ - drawable supplying default values for the</span>
<a name="line-83"></a> <span class='hs-varop'>--pixmap</span>
<a name="line-84"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-comment'>-- ^ @width@ - width of the pixmap</span>
<a name="line-85"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-comment'>-- ^ @height@ - height of the pixmap</span>
<a name="line-86"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-conid'>Int</span> <span class='hs-comment'>-- ^ @depth@ - depth of the pixmap</span>
<a name="line-87"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>Pixmap</span>
<a name="line-88"></a><span class='hs-definition'>pixmapNew</span> <span class='hs-varid'>mbDrawable</span> <span class='hs-varid'>width</span> <span class='hs-varid'>height</span> <span class='hs-varid'>depth</span> <span class='hs-keyglyph'>=</span>
<a name="line-89"></a> <span class='hs-varid'>constructNewGObject</span> <span class='hs-varid'>mkPixmap</span> <span class='hs-varop'>$</span>
<a name="line-90"></a> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-layout'>(</span><span class='hs-conid'>Drawable</span> <span class='hs-varid'>arg1</span><span class='hs-layout'>)</span> <span class='hs-varid'>arg2</span> <span class='hs-varid'>arg3</span> <span class='hs-varid'>arg4</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>withForeignPtr</span> <span class='hs-varid'>arg1</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>argPtr1</span> <span class='hs-keyglyph'>-></span><span class='hs-varid'>gdk_pixmap_new</span> <span class='hs-varid'>argPtr1</span> <span class='hs-varid'>arg2</span> <span class='hs-varid'>arg3</span> <span class='hs-varid'>arg4</span><span class='hs-layout'>)</span>
<a name="line-91"></a><span class='hs-comment'>{-# LINE 88 "./Graphics/UI/Gtk/Gdk/Pixmap.chs" #-}</span>
<a name="line-92"></a> <span class='hs-layout'>(</span><span class='hs-varid'>maybe</span> <span class='hs-layout'>(</span><span class='hs-conid'>Drawable</span> <span class='hs-varid'>nullForeignPtr</span><span class='hs-layout'>)</span> <span class='hs-varid'>toDrawable</span> <span class='hs-varid'>mbDrawable</span><span class='hs-layout'>)</span>
<a name="line-93"></a> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>width</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varid'>height</span><span class='hs-layout'>)</span>
<a name="line-94"></a> <span class='hs-layout'>(</span><span class='hs-varid'>fromIntegral</span> <span class='hs-varop'>$</span> <span class='hs-varid'>fromMaybe</span> <span class='hs-layout'>(</span><span class='hs-varid'>negate</span> <span class='hs-num'>1</span><span class='hs-layout'>)</span> <span class='hs-varid'>depth</span><span class='hs-layout'>)</span>
<a name="line-95"></a>
<a name="line-96"></a><span class='hs-keyword'>foreign</span> <span class='hs-keyword'>import</span> <span class='hs-keyword'>ccall</span> <span class='hs-keyword'>unsafe</span> <span class='hs-str'>"gdk_pixmap_new"</span>
<a name="line-97"></a> <span class='hs-varid'>gdk_pixmap_new</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>Drawable</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>CInt</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>IO</span> <span class='hs-layout'>(</span><span class='hs-conid'>Ptr</span> <span class='hs-conid'>Pixmap</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
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